UIWebView中加载本地图片

最新推荐文章于 2021-07-02 16:17:21 发布

转载最新推荐文章于 2021-07-02 16:17:21 发布 · 82 阅读

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原文链接：http://www.cnblogs.com/ios988/p/8124422.html

本文介绍如何使用UIWebView加载本地图片资源。通过在iOS应用中设置UIWebView的代理方法，并利用JavaScript来动态设置图片路径，可以成功加载并显示本地图片。

UIWebView中加载本地图片
    - (void)viewDidLoad  
    {  
        [super viewDidLoad];  
      
        UIWebView *webView = [[UIWebView alloc] initWithFrame:self.view.bounds];  
        webView.delegate = self;  
        [webView loadHTMLString:@"<html><head></head><body><img class='test' width=100% height=100% src=''></body></html>" baseURL:nil];  
        [self.view addSubview:webView];  
    }  
      
    - (void)didReceiveMemoryWarning  
    {  
        [super didReceiveMemoryWarning];  
        // Dispose of any resources that can be recreated.  
    }  
      
    #pragma mark - UIWebViewDelegate methods  
    -(void)webViewDidFinishLoad:(UIWebView *)webView{  
        NSString *imagePath = [[NSBundle mainBundle] resourcePath];  
        imagePath = [imagePath stringByReplacingOccurrencesOfString:@"/" withString:@"//"];  
        imagePath = [imagePath stringByReplacingOccurrencesOfString:@" " withString:@"%20"];  
        imagePath = [NSString stringWithFormat:@"file:/%@//%@",imagePath,@"test.png"];  
        NSString * js = [NSString stringWithFormat:@"document.images[0].src='%@'",imagePath];  
        [webView stringByEvaluatingJavaScriptFromString:js];  
        NSString *path = [webView stringByEvaluatingJavaScriptFromString:@"document.body.innerHTML"];  
        NSLog(@"%@",path);  
    }